Clutch.



' ing in New York city, borough of Manhat- 'MTBF STATES PArENT Omen.

PHILLIPP Il MEKooLWYEF-F, orlN- EWYORKf N. Y.

cLuTcH.

' srEcmcATIoN forming para of Letters Patent No. 670,205, dated Maren 1'9, 19u15 Y' Application Bled July 28. 1900. Serial No. A25.108. (llo mndeL:

To all whom/jt 'mit-yconcern:V I 'l 'Be it known that I, PHILLrPP I. MERKooL YEFF, a subject ofthe Czar of Russia, residtan, State of New York,havfe invented certain new and nsefullmprovements in Clutches, of which the following is a specification.

The object of my invention is to provide improved means for locking a wheel and shaft together for rotation one 'direction and for permitting free independent relative rotation of the parts in the opposite direction; and to this end I provide a shaft, a wheel adapted to rotate independently thereof,and a lockingpiece adapted to connect or disconnect the shaft and wheel, according to the direction of? rotation of the parts.

-Theinvention further consists in thenovel detailsof improvement that/will be more fully hereinafter set forth and then pointed out in claims.

Reference is to be had to the accompanying drawings, forming part hereof, Wherein- Figure 1 is a side elevation of a wheel embodying my invention, and Fig'. 2 is a crosssection substantially on the lines 2 2in Fig. 1.

In the accompanying drawings, in which similar letters of reference indicate corresponding parts in the views, the letter A indicates a suitable vwheel which is mounted to rotate freely vupon a shaft B, that may be` journaled in suitable bearings, and the wheel A may be provided with a pulley a or other suitable means for transmitting or receiving power. To the shaft B is suitably secured a disk C by a key or otherwise, and D is a locking-piece` interposed betweenthe Wheel A and the disk C and adapted to simultaneously bear upon said parts. -The ylooking-piece D 4cn/is supported by the wheel and is shown provided with a slot d, that receives a pivot or the likeeE, that is shown ,secured to a spoke a', a bearing-piece d' being shown interposed -between the spoke and the head of the pivot E to maintain the locking-piece D in proper position. The slot d is of greateis length than the diameter of the pivot E, so that the locking-piece D1 may have longitudinal play.

. The locking-piece D at one end is adapted to bear upon the disk C and at its other end against the wheel A, and the length of the lockingfpiece D is greater than the shortest mally stand at an acute angle to the radius of the wheel. A

By preference' the pivot E is located midway between the ends of the locking-piece D,

so as Vto overcome the tendency of the locking-piece to rotatefon its pivot as it is carried around with the wheel, and the elongated slot d permits the locking-piece D to adjust itself between the disk C and the wheel in accord-v ance with the amount of wear that cur at theends of the Alocking-piece.

I have shown the inner surface of the rim of the wheel provided with a notch a2, the

may ocsis bottom wall a3 of which is preferably made A on a plane that is parallel to a tangent of the wheel, the notch forming abutments a4, that can limit the rotary motion of the lockingpiece D.

F is a spring interposed between the locking-piece D and the Wheel to maintain the locking-'piece in its normal position. Said spring is shown secured .to the locking-piece D and bearing against a shoulder or abutment a4, whereby the locking-piece D is nor.- mally held simultaneously against the disk C and the wall as. x f

If the wheel A is rotated to the right in Fig. l the locking-piece D will be jammed between the disk C land the wheel, whereby the shaft Bwill be rotated with the wheel; but if the wheel rotatesin the reverse-direction the locking-piece D will tilt' on its pivot, so that the Wheel will rotate independently of the shaft. Likewise if the shaft is rotated to the left in Fig. 1 the-lockingpiece will cause the wheel to rotate with the shaft, and

if the shaft is rotated in the reverse direction the disk C will rotate independently-of the wheel. Thus either the shaft or the Wheel, through the medium of the locking-piece, can rotate the other, and either can rotate independently inan opposite direct-ion.

It is evident that vas the disk C ispractically an extension of the shaftfB the lockingpiece D could bear directly upon the shaft, the shaft being of suitable diameter for the purpose.

Having now described my invention, what' I claim si IOO l 1. VThe combination of ashaft having an annular bearing-snrface,`a wheel rotative independently thereof and provided with a tan en h than the shortest distance between the Jgi sai bearing-surfaces, and means for maintaining the locking-piece upon the wheel to rotate therewith, substantially as described.

2. The combination of a shaft, a wheel rotative independently thereof, alocking-piece interposed between themV and pivotally carried by the wheel one end operating with the wheel and the other end with the shaft, and means for normally maintaining the lockingpiece in position at an angleto the radius of the wheel, substantially as described.

3. The combination of a shaft, a wheel provided with a bearing-surfa facing the'shaft' and extending in a plane parallel'toatangent of the wheel, and a locking-piece interposed between the shaft and said bearing-surface and adapted to bear at one end against said surface and at its other end to connect with the shaf t and means to maintain said lockingpiece normally at any angle to theradins of the-wheel, substantially as described. Y.

4. The combination of a shaft provided with adisk, a wheel'rotative independently of the shaft, and a locking-piece p votally snpported by the wheel and adapted to have lontndinal playon its pivotjnndJ of greater length than the shortest distance between the disk and the part of the wheel upon which the 35 locking-pisos acts, one end of the lockingpiece operating against. the wheel and the other end against'the shaft or an interposed disk, as described. y Y `4` 5. The combination of. a shaft provided with a disk, a wheel provided with a notch l opposed to the disk, ln. locking-piece having one end bearing upon the disk and the other end bearing against the inner wall of the notch, and a sprlng'bearing against ons wall 45 ofthe notch and also Aagainst the lockingpiece to maintain the, locking-piecein the normal position, substantially as described. y PH.I. MERKOOLYEFF.

Witnesses:

T. F. BOUBNE,

M. MANNING. 

